Bar-tailed
Godwit are infrequent during the spring migration, but are more regular
in the autumn. In common with other locations (such as Le Clipon in
France), the first birds turn up towards the end of July and the peak
occurs from end August to mid September.

The occurrence pattern of this species at Utsira is very
similar both in timing and numbers.

The blue line shows number of visits, the orange one the number of
visits when Bar-tailed Godwit have been recorded and the green one
(numbers on right hand axis) shows the maximum
numbers I have recorded in any three day period.